Agilent Manuals

The document introduces the UNITY™-Air Server of Airtech, which is a new technology for online monitoring of volatile organic compounds (VOCs) in air. This technology can be coupled with a gas chromatograph (GC) or a gas chromatograph/mass spectrometer (GC/MS) and is suitable for unattended operation in remote field.

Introduced a new thermal desorption technology, which has the advantages of high sensitivity, high recovery rate, no solvent and low cost.

The LC-ICP-MS Connection Kit for Agilent 7500 Series Technology allows routine and overnight running of integrated LC-ICP-MS analyses. It provides routine detection and quantification of elemental species. Isotope analysis capability of ICP-MS enables isotope dilution and isotope tracer studies to be performed.

Agilent GC-ICP-MS Interface Technology is the first fully integrated solution for the coupling of the two techniques, combining Agilent's expertise in gas chromatogra- phy (GC) and inductively coupled plasma mass spectrometry (ICP-MS). The separation capabilities of gas chromatography and the high sensitivity and selectiv- ity of the Agilent 7500 Series ICP-MS provide analysts with the capability to separate and quantitate ultra- trace levels of organometallic compounds.

This document briefly describes the ability of the Agilent 355 Sulfur Chemiluminescence Detector (SCD) to help refiners meet some of the sulfur measurement challenges for low-sulfur diesel fuels. Sulfur compounds occur naturally in petroleum and feedstocks for fuel production. Their presence creates processing challenges and impacts product quality. Many sulfur compounds are toxic, reactive, and corrosive to processing equipment and damage catalysts used in hydrocarbon processing. In terms of the product quality of fuels, sulfur compounds impart undesirable odors and contribute to gum formation in gasoline and diesel fuel, and turbine deposits in jet fuel, especially in military aircraft. From a pollution standpoint, all fuel sulfur contributes to acid rain. It is also known that sulfur compounds poison catalytic converters used in modern automobiles, contributing to other emission problems. In industrialized nations, strict environmental regulations directed toward sulfur have been critical to improving air quality. The U.S. EPA and other environmental regulatory bodies, particularly those in Europe, Japan, and other industrialized nations, have developed regulations.

The document introduces the Agilent 355 sulfur chemiluminescence detector for the analysis of trace hydrogen sulfide and carbonyl sulfide as well as other volatile sulfur compounds.

This document discusses the analysis of commercial jet fuels for sulfur using an Agilent 355 Sulfur Chemiluminescence Detector (SCD). The Agilent 355 SCD exhibits high sensitivity, selectivity, and linear response, combined with the separation capabilities of the Chrompack CP Sil 5 CB capillary column, making it the ideal detector for low-level sulfur analysis. Jet fuels are typically blended from low-sulfur or desulfurized kerosene, cracked blending stocks, and hydrocracked blending stocks. There are two basic types of jet fuels: naptha and kerosene. Naptha jet fuel is primarily produced for military uses and has a wide boiling range, while commercial jet fuels have a narrower boiling point range and are typically sold as JP-5.

This document describes the analysis of liquefied petroleum gases according to ASTM D 5504-95. It utilizes gas chromatography with sulfur chemiluminescence detection to identify and quantify sulfur compounds in petroleum feeds and products, including liquefied petroleum gases (LPGs) and natural gas liquids (NGLs). Sulfur compounds can have corrosive effects, inhibit or destroy catalysts in downstream processing, and introduce undesirable properties to products. However, certain odorous sulfur compounds like ethyl mercaptan, tetrahydrothiophene, and occasionally thiophane are intentionally added to propane as warning agents for detecting LPG leaks. The ability to speciate sulfur compounds in these liquids is useful for quality assurance of odorant addition and better control of sulfur compounds in finished products.

This document describes the determination of sulfur boiling point distribution and total sulfur content of petroleum and petrochemical products that fall within the scope of ASTM D 2887.

This document mainly introduces the analysis method of sulfur content in benzene, and introduces the application of Agilent 355 Sulfur Chemiluminescence Detector (SCD) in the analysis of trace sulfur content in benzene.

The copper strip corrosion test is commonly used as a product specification for liquid petroleum gases (LPGs). The test is designed to detect the presence of components that may be corrosive to copper and copper-alloy fittings that come into contact with the product. While the test is very simple to perform, its interpretation can be subjective. Furthermore, the test can produce erroneous results and it does not indicate the actual cause of corrosion, although it is generally assumed to be due to sulfur compounds. Some situations where copper strip corrosion does not perform satisfactorily are as follows. While the presence of carbonyl sulfide does not cause corrosion in LPG systems, corrosive hydrogen sulfide is formed upon hydrolysis of carbonyl sulfide. Thus, an LPG could pass the copper strip corrosion test at its point of production and yet fail at its point of delivery or simply upon storage for a few days. Different LPGs may each pass the copper strip corrosion test, but when commingled could fail. This occurs because of hydrolysis as described or because one could contain a low level of hydrogen sulfide and the other could contain a low level of elemental sulfur. Hydrogen sulfide and elemental sulfur are known to have a synergistic effect on corrosivity. An LPG product could contain corrosive amounts of hydrogen sulfide and yet pass the Agilent Model 355 Sulfur Chemiluminescence Detector (SCD) test.

This document introduces the detection characteristics of Agilent Model 255 NCD and FID, and their combined use methods.

This document introduces the features and characteristics of the Agilent 255 nitrogen chemiluminescence detector, including the principle of detection, applicable range, advantages, etc